港股紫金矿业（02899）今日盘中大涨5.12%，引发市场关注。这一显著涨幅主要受到以下几个因素的推动：
首先，现货黄金价格持续走高，屡创新高。据报道，亚洲早盘时段，现货黄金价格突破3210美元/盎司，日内涨幅超过1%。金价的持续上涨直接带动了包括紫金矿业在内的黄金股走强。
其次，整个贵金属板块普遍走高。市场数据显示，同属黄金股的赤峰黄金涨超8%，山东黄金涨超7%，灵宝黄金等黄金股也纷纷跟涨。行业整体向好的氛围为紫金矿业的股价上涨提供了有力支撑。
此外，紫金矿业近期完成的股票回购计划也可能对投资者信心产生积极影响。公司公告显示，截至4月10日，紫金矿业已完成回购计划，累计回购股份6431.6万股，占总股本的0.24%，回购金额达9.9989亿元。这一举措展现了公司对自身价值的认可，有助于提振市场信心。
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